HD74HC259 Datasheet, PDF (4/8 Pages) Hitachi Semiconductor – 8-bit Addressable Latch

HD74HC259
AC Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Symbol
Propagation delay t_PHL
time
t _PLH
V_CC (V)
2.0
4.5
6.0
Min Typ Max Min
— — 185 —
— 16 37 —
— — 31 —
Max Unit
230 ns
46
39
2.0
— — 215 — 270
4.5
— 20 43 — 54
6.0
— — 37 — 46
2.0
— — 200 — 250
4.5
— 17 40 — 50
6.0
— — 34 — 43
t _PHL
2.0
— — 155 — 195 ns
4.5
— 15 31 — 39
6.0
— — 26 — 33
Pulse width
t_w
2.0
80 — — 100 — ns
4.5
16 6 — 20 —
6.0
14 — — 17 —
Setup time
t _su
2.0
100 — — 125 — ns
4.5
20 5 — 25 —
6.0
17 — — 21 —
Hold time
t_h
2.0
5 —— 5
— ns
4.5
5 –1 — 5
—
6.0
5 —— 5
—
Output rise/fall
t _TLH
time
t _THL
2.0
— — 75 — 95 ns
4.5
— 5 15 — 19
6.0
— — 13 — 16
Input capacitance Cin
—
— 5 10 — 10 pF
Test Conditions
Data to output
Latch select to output
Enable to output
Clear to output
Clear, Enable
Latch select or data to enable
Latch select or data to enable
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